1. (n.) A check; a relapse; a discouragement; a setback.

2. (n.) Whatever is thrown back in its course, as water.

3. (v. i.) To plow again, in the fall; -- said of prairie land broken up in the spring.

Mnemosyne aboriginality affect memory age ancien regime ancientness anterograde memory antiquity backset backward deviation cobwebs of antiquity collective memory computer memory disk memory drum memory dust of ages eld elderliness eldership emotional response engram falling back great age hoary age hoary eld information storage inveteracy kinesthetic memory lapse memory memory bank memory circuit memory trace mind mneme old age old order old style oldness primitiveness primogeniture primordialism primordiality race memory recollection recrudescence recurrence regression relapse remembrance renewal return reversal reverse reversion screen memory senility seniority setback skill souvenir tape memory throwback venerableness verbal response visual memory